PERTH, Australia (April 8, 2014) Faint sounds detected from deep in the Indian Ocean, possibly from the missing Malaysian jetliner's black boxes, have faded the past two days, and one concern is that the batteries that power the recorders have finally run down.
They were warrantied to last for 30 days, but that period ended on Sunday.
Angus Houston, the retired Australian air chief marshal who is heading the search, says the effort to detect the sounds will go on for a few more days before an autonomous submarine is deployed to search for a debris field.
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